| 年份 | 开曼群岛 |
|---|---|
| 2023 | - |
| 2022 | 5.07543 |
| 2021 | 4.82987 |
| 2020 | 4.61942 |
| 2019 | 4.45828 |
| 2018 | 4.33233 |
| 2017 | 4.22582 |
| 2016 | 4.11019 |
| 2015 | 3.99321 |
| 2014 | 3.84933 |
| 2013 | 3.62199 |
| 2012 | 3.36525 |
| 2011 | 3.12819 |
| 2010 | 2.93654 |
| 2009 | 2.8116 |
| 2008 | 2.72738 |
| 2007 | 2.64493 |
| 2006 | 2.55738 |
| 2005 | 2.47878 |
| 2004 | 2.41465 |
| 2003 | 2.41037 |
| 2002 | 2.43201 |
| 2001 | 2.46665 |
| 2000 | 2.52835 |
| 1999 | 2.5758 |
| 1998 | 2.59571 |
| 1997 | 2.63231 |
| 1996 | 2.66165 |
| 1995 | 2.65537 |
| 1994 | 2.69138 |
| 1993 | 2.72674 |
| 1992 | 2.69502 |
| 1991 | 2.64387 |
| 1990 | 2.61956 |
| 1989 | 2.60238 |
| 1988 | 2.63871 |
| 1987 | 2.73873 |
| 1986 | 2.78872 |
| 1985 | 2.77752 |
| 1984 | 2.75058 |
| 1983 | 2.71461 |
| 1982 | 2.68941 |
| 1981 | 2.73066 |
| 1980 | 2.8223 |
| 1979 | 2.93047 |
| 1978 | 3.05901 |
| 1977 | 3.18615 |
| 1976 | 3.31273 |
| 1975 | 3.41844 |
| 1974 | 3.46228 |
| 1973 | 3.46381 |
| 1972 | 3.49656 |
| 1971 | 3.5807 |
| 1970 | 3.5932 |
| 1969 | 3.48226 |
| 1968 | 3.37347 |
| 1967 | 3.29467 |
| 1966 | 3.27999 |
| 1965 | 3.38742 |
| 1964 | 3.5585 |
| 1963 | 3.6998 |
| 1962 | 3.75107 |
| 1961 | 3.711 |
| 1960 | 3.5607 |